2001 Chrysler Town & Country, 129K miles, may need alternator pulley and key. Anyone have experience with this? Will I end up needing a new alternator after all? And what's a reasonable charge in a major metro area?

Check connections to Alternator and Battery. If probably connected, have someone check the Alternator output. If still good, check fuse.

remove the belt and see how much play is on the alt pulley sounds like a bearing wearing out.

yes you need a new thermostat or there is low coolant. this will affect the mpg because your overheating and thats why its stalling. dont drive until you fix or you will blow your head gasket if it isnt blown already. change thermostate and check coolant.

It could be your Ac Compressor pulley bearing. Thats what it was for me. I replaced the altenator first too thinking that was it.

just fixed rattling problem on my 2005 grand caravan 3.8 replaced alternator pulley has a clutch effect when i twist it back and fourth by hand could hear rattling and squeaks replaced alternator and pulley and rattling is gone

sounds like an auxillary device like alternator, power steering pump, water pump, etc. check all your fluids. pay special attention to your alternator, i have heard this before and it ended up being an alternator

P0404 IS EGR POSITION SENSOR PERFORMANCE..YOU NEED A NEW EGR VALVE..RECOMMEND DISCONNECTING BATTERY WHILE REPLACING EGR VALVE..SOMETIMES CODE WILL NOT GO AWAY EVEN AFTER REPLACING VALVE AND CLEARING CODE WITH SCANNER..VALVE IS LOCATED ABOVE ALTERNATOR ON END OF CYLINDER HEAD..THE BOTTOM BOLT CAN BE TRICKY TO REMOVE AND HAVE HAD TO REMOVE ALTERNATOR TO GET BOLT OUT..YOU WILL NEED A NEW GASKET FOR TUBE AS WELL..ABOUT 120 BUCKS FROM DEALER(CAN)

like a gas pump? it means you need gas....

sounds like the heater is drawing down the battery. Which would be a battery or alternator problem most likely. If not check the amp draw of the blower motor .